Year	million passenger-km
1995	10243
1996	10978
1997	12551
1998	12728
1999	11564
2000	11890
2001	13023
2002	1126
2003	996
2004	1001
2005	991
2007	13864.979578
2013	550.15
2014	14270
2015	13704
2016	11837
2017	9821.328
2018	7113.744
2019	5504.426
2020	3501.96